linux-kernel - Re: [PATCH resend] virtio-net: Remove more stack DMA

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Message-Id: <20160719.192604.333351511286408057.davem@davemloft.net>
Date:	Tue, 19 Jul 2016 19:26:04 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	luto@...nel.org
Cc:	x86@...nel.org, bp@...en8.de, linux-kernel@...r.kernel.org,
	mst@...hat.com, netdev@...r.kernel.org
Subject: Re: [PATCH resend] virtio-net: Remove more stack DMA

From: Andy Lutomirski <luto@...nel.org>
Date: Mon, 18 Jul 2016 15:34:49 -0700

> VLAN and MQ control was doing DMA from the stack.  Fix it.
> 
> Cc: Michael S. Tsirkin <mst@...hat.com>
> Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
> Signed-off-by: Andy Lutomirski <luto@...nel.org>
> ---
> 
> I tested VLAN addition and removal with CONFIG_VMAP_STACK=y,
> CONFIG_DEBUG_SG=y and it got rid of the warnings I saw.  I haven't
> tested the MQ part because I don't know how to enable it in the first
> place (I'm guessing it needs me to enable some QEMU feature I don't
> know about.)
> 
> DaveM, contrary to what I thought last time I sent this, I think this
> should go through net-next as long as it makes it in time for 4.8.

Applied to net-next, thanks.